LT1952EGN(RevD) データシートの表示（PDF） - Linear Technology
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LT1952EGN Datasheet PDF : 24 Pages
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LT1952/LT1952-1
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN (Note 8) ............................................... –0.3V to 25V
SYNC, SS_MAXDC, SD_VSEC, ISENSE, OC ....– 0.3V to 6V
COMP, BLANK, DELAY............................... –0.3V to 3.5V
FB ................................................................– 0.3V to 3V
ROSC..................................................................... –50μA
VREF ....................................................................–10mA
Operating Junction Temperature Range
(Notes 2, 5)............................................–40°C to 125°C
Storage Temperature Range...................–65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
PIN CONFIGURATION
COMP 1
FB 2
ROSC 3
SYNC 4
SS_MAXDC 5
VREF 6
SD_VSEC 7
GND 8
TOP VIEW
16 SOUT
15 VIN
14 OUT
13 PGND
12 DELAY
11 OC
10 ISENSE
9 BLANK
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 110°C/W, θJC = 40°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LT1952EGN#PBF
LT1952EGN#TRPBF
1952
16-Lead Plastic SSOP
LT1952IGN#PBF
LT1952IGN#TRPBF
1952I
16-Lead Plastic SSOP
LT1952EGN-1#PBF
LT1952EGN-1#TRPBF 19521
16-Lead Plastic SSOP
LT1952IGN-1#PBF
LT1952IGN-1#TRPBF 1952I1
16-Lead Plastic SSOP
LEAD BASED FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LT1952EGN
LT1952EGN#TR
1952
16-Lead Plastic SSOP
LT1952IGN
LT1952IGN#TR
1952I
16-Lead Plastic SSOP
LT1952EGN-1
LT1952EGN-1#TR
19521
16-Lead Plastic SSOP
LT1952IGN-1
LT1952IGN-1#TR
1952I1
16-Lead Plastic SSOP
Consult LTC Marketing for parts specified with wider operating temperature ranges.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. COMP = open, FB = 1.4V, ROSC = 178k, SYNC = 0V, SS_MAXDC = VREF, VREF
= 0.1μF, SD_VSEC = 2V, BLANK = 121k, DELAY = 121k, ISENSE = 0V, OC = 0V, OUT = 1nF, VIN = 15V, SOUT = open, unless otherwise specified.
PARAMETER
PWM CONTROLLER
Operational Input Voltage
VIN Quiescent Current
VIN Start-up Current (LT1952)
VIN Start-up Current (LT1952-1)
VIN Shutdown Current
SD_VSEC Threshold
SD_VSEC (ON) Current
SD_VSEC (OFF) Current
CONDITIONS
I(VREF) = 0μA
I(VREF) = 0μA, ISENSE = OC = Open
FB = 0V, SS_MAXDC = 0V (Notes 4, 9)
FB = 0V, SS_MAXDC = 0V (Notes 4, 9)
SD_VSEC = 0V
10V < VIN < 25V
SD_VSEC = SD_VSEC Threshold + 100mV
SD_VSEC = SD_VSEC Threshold – 100mV
MIN TYP MAX UNITS
l VIN OFF
5.2
l
460
l
400
240
l 1.261 1.32
0
8.3
10
25
6.5
700
575
350
1.379
11.7
V
mA
μA
μA
μA
V
μA
μA
19521fd
2
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